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Buell Forum » 1125R Superbike Board » Archive through May 09, 2014 » Loose Rear Sprocket.... « Previous Next »

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Dwp138
Posted on Wednesday, April 02, 2014 - 10:21 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Got back from a ride yesterday afternoon , and noticed one of the rear sprocket bolts backed all the way out , and slapped the swing arm , damaging my wheel. All the other bolts are loose on the sprocket also.

I bought the bike around 4,000 miles ago. The guy I got it from owns a shop , and replaced the tires before the sale. He claims you do not need to remove the rear sprocket for a tire change , and that the bolts must have been installed without loctite from birth.

What do you guys think?? He is blaming the issue on the bike being a Harley/Buell... I don't recall re-torquing the sprockets as part of the maintenance , have any of you had this issue?

If that sprocket would have come off while in a turn at 7-8kr rpms , I probably would not be here right now.
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Jdugger
Posted on Wednesday, April 02, 2014 - 10:26 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

> He claims you do not need to remove the rear sprocket for a tire change

He's correct.

> and that the bolts must have been installed without loctite from birth.

Perhaps. The OEM fasteners have a locking compound on them and are supposed to be a one-time-use fastener. So this would be unusual, but maybe not impossible. I think it would be hard to know.

I've personally never had a pulley or sprocket fastener back out or even come loose, but I loctite blue the crap out of them.
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Stirz007
Posted on Wednesday, April 02, 2014 - 12:17 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

On some tire machines, yes - but not all. Pirelli guy at the track can do changes with pulley on, no problem.
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Wobbles
Posted on Thursday, April 03, 2014 - 10:00 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I have a coats 220 tire changer, and you must remove the rear pulley. Looks like I need to pull the bolts and locktite them.
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Jdugger
Posted on Thursday, April 03, 2014 - 11:22 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

And get a decent tire changer! The no-mar is fine.

I cannot imagine having to remove the pulley for a tire change. What a PITA!
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Oldog
Posted on Thursday, April 03, 2014 - 11:30 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I have a coats 220 tire changer, and you must remove the rear pulley.

Turn it over?
}
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Jdugger
Posted on Thursday, April 03, 2014 - 01:42 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

It can be hard to change a tire with the pulley on top because it's so big you can't get the angle you need with the tire tool.
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Tommymac92
Posted on Thursday, April 03, 2014 - 01:53 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I was figuring the same thing, with my track bikes I would pull the sprocket assembly off. I have been spoiled with my street bikes, both my future and triumph have single sided swing arms so no issue with the sprockets. I am also using a no mar
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Cutty72
Posted on Sunday, April 27, 2014 - 01:10 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Yup, I learned that last weekend, pulley on top makes it difficult at best to get the new rubber on. Flip it over and it goes on easy.
No-Mar here as well.
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